Hoffman Electrolysis Apparatus

For qualitative and quantitativestudy of the electrolyticdecomposition of electrolytessuch as water, hydrochloricacid etc.Consists of two vertical 50mL,gas-collecting, graduatedglass tubes with stopcocks attop and joined by a bridgingtube to a reservoir and ﬁttedwith a pair of platinumelectrodes at the lower endsof the glass tubes. A leadwire connecting the platinumelectrode passes throughthe glass tube for externalconnections, so that only theplatinum electrode comes incontact with the electrolyte.Packed in a styrofoam case.Mounted on a cast iron standdesigned for safe clamping.Requires a 6V battery or lowvoltage D.C. power supply foroperation.